How to Choose the Right Truck Mounted Drilling Rig

Choosing the right truck mounted drilling rig isn't as simple as picking the biggest horsepower you can afford. There are a lot of tradeoffs, and buying the wrong rig costs you money both upfront and in lost productivity. Here's what you need to think through before you buy.

Step 1: Figure Out Your Maximum Drilling Depth

This is the single most important factor. If you're drilling 1000-meter wells, buying a 5000-meter rig is a waste of money. But if you buy a rig that's too small, you'll outgrow it in a year. A good rule of thumb: size the rig for 120% of your expected maximum depth, to leave room for growth.

Step 2: Consider Your Terrain

A standard 6x4 highway chassis works fine if you're on paved roads and flat terrain. But if you're working in the desert, in the mountains, or on unpaved lease roads, you need a 6x6 or 8x8 all-wheel drive chassis. The extra traction and ground clearance is worth every penny when you're stuck in the mud with a loaded rig.

Step 3: Don't Forget the Support Equipment

Many buyers focus on the rig itself and forget the ancillary equipment. You need mud pumps, shale shakers, a BOP stack, a cementing unit, and water storage. Buying a cheap rig and then skimping on support equipment is a classic mistake — the rig is only as good as the system around it.

Step 4: Think About Total Cost of Ownership

The purchase price is just the start. Fuel consumption, maintenance costs, spare parts availability, and operator comfort all add up over the life of the rig. A slightly more expensive rig that's more fuel-efficient and easier to maintain will save you money in the long run.

FAQ

Q: What's the most popular truck mounted drilling rig size?
A: 350HP to 550HP is the sweet spot for most onshore work. It's powerful enough for most wells, but still mobile and relatively affordable.